000 nam a22 7a 4500
999 _c2244
_d2244
003 OSt
005 20180702105946.0
008 180702b xxu||||| |||| 00| 0 eng d
020 _a8121924766
082 _a636
_bSIN
100 _aSingh, H.R.
245 _aEnvironmental Biology /
_cBy H.R. Singh.
260 _aNew Delhi :
_bS. Chand & Company Ltd. ;
_c2005.
300 _axii ; 210 p.,
_c24 cm.
942 _2ddc
_cBK